https://journal.iaimnumetrolampung.ac.id/index.php/numerical <div style="text-align: justify;"> <p><strong>Numerical: Jurnal Matematika dan Pendidikan Matematika </strong>(e-ISSN <a href="https://issn.brin.go.id/terbit/detail/1496562581">2580-2437</a> p-ISSN <a href="https://issn.brin.go.id/terbit/detail/1496468528">2580-3573</a>) is a peer-reviewed, open-access journal for research activity on mathematics and mathematics education. The Journal published biannually (June and December) by Univeristas Ma’arif Lampung. The journal is managed by Study Program of Mathematics Education, Faculty of Tarbiyah. Furthermore, the Numerical has been Accredited <strong>Sinta Rank 4</strong> by the Ministry of Research, Technology, and Higher Education, the Republic of Indonesia since December 2023.</p> </div> Universitas Ma'arif Lampung en-US Numerical: Jurnal Matematika dan Pendidikan Matematika 2580-3573 https://journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/5342 <p>Ethnomathematics is an approach that connects mathematics and culture. This study aims to describe the mathematical concepts contained in historical objects in the Airlangga Museum, Kediri City. This research uses a descriptive qualitative approach with observation, interview, and documentation methods. Data were collected through direct observation of historical objects, interviews with museum staff, and photo documentation. The results showed that historical objects in Airlangga Museum Kediri City, such as year number stones, ceke'r inscriptions, and stone barrels, contain mathematical concepts. This shows that mathematics has been integrated in the culture and life of the people of Kediri since ancient times. This research is expected to be an inspiration for the development of meaningful and cultured mathematics learning</p> Hellen Putri Octa Ardilla Ayu Gusniawati Jatmiko Jatmiko Copyright (c) 2025 Hellen Putri Octa Ardilla, Ayu Gusniawati, Jatmiko Jatmiko http://creativecommons.org/licenses/by-sa/4.0 2025-05-04 2025-05-04 10.25217/numerical.v9i1.5342